Class AbstractHandlerMethodAdapter

All Implemented Interfaces:
Aware, ApplicationContextAware, Ordered, ServletContextAware, HandlerAdapter
Direct Known Subclasses:
RequestMappingHandlerAdapter

public abstract class AbstractHandlerMethodAdapter extends WebContentGenerator implements HandlerAdapter, Ordered
Abstract base class for HandlerAdapter implementations that support handlers of type HandlerMethod.
Since:
3.1
Author:
Arjen Poutsma
  • Constructor Details

    • AbstractHandlerMethodAdapter

      public AbstractHandlerMethodAdapter()
  • Method Details

    • setOrder

      public void setOrder(int order)
      Specify the order value for this HandlerAdapter bean.

      The default value is Ordered.LOWEST_PRECEDENCE, meaning non-ordered.

      See Also:
    • getOrder

      public int getOrder()
      Description copied from interface: Ordered
      Get the order value of this object.

      Higher values are interpreted as lower priority. As a consequence, the object with the lowest value has the highest priority (somewhat analogous to Servlet load-on-startup values).

      Same order values will result in arbitrary sort positions for the affected objects.

      Specified by:
      getOrder in interface Ordered
      Returns:
      the order value
      See Also:
    • supports

      public final boolean supports(Object handler)
      This implementation expects the handler to be an HandlerMethod.
      Specified by:
      supports in interface HandlerAdapter
      Parameters:
      handler - the handler instance to check
      Returns:
      whether this adapter can adapt the given handler
    • supportsInternal

      protected abstract boolean supportsInternal(HandlerMethod handlerMethod)
      Given a handler method, return whether this adapter can support it.
      Parameters:
      handlerMethod - the handler method to check
      Returns:
      whether this adapter can adapt the given method
    • handle

      @Nullable public final ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
      This implementation expects the handler to be an HandlerMethod.
      Specified by:
      handle in interface HandlerAdapter
      Parameters:
      request - current HTTP request
      response - current HTTP response
      handler - the handler to use. This object must have previously been passed to the supports method of this interface, which must have returned true.
      Returns:
      a ModelAndView object with the name of the view and the required model data, or null if the request has been handled directly
      Throws:
      Exception - in case of errors
    • handleInternal

      @Nullable protected abstract ModelAndView handleInternal(HttpServletRequest request, HttpServletResponse response, HandlerMethod handlerMethod) throws Exception
      Use the given handler method to handle the request.
      Parameters:
      request - current HTTP request
      response - current HTTP response
      handlerMethod - handler method to use. This object must have previously been passed to the supportsInternal(HandlerMethod) this interface, which must have returned true.
      Returns:
      a ModelAndView object with the name of the view and the required model data, or null if the request has been handled directly
      Throws:
      Exception - in case of errors
    • getLastModified

      public final long getLastModified(HttpServletRequest request, Object handler)
      This implementation expects the handler to be an HandlerMethod.
      Specified by:
      getLastModified in interface HandlerAdapter
      Parameters:
      request - current HTTP request
      handler - the handler to use
      Returns:
      the lastModified value for the given handler
    • getLastModifiedInternal

      @Deprecated protected abstract long getLastModifiedInternal(HttpServletRequest request, HandlerMethod handlerMethod)
      Deprecated.
      as of 5.3.9 along with LastModified.
      Parameters:
      request - current HTTP request
      handlerMethod - handler method to use
      Returns:
      the lastModified value for the given handler